PC's and EFI

[John Hess]

It is called an emulator.  You can find them all over the internet for $99
and up.  They emulate a ROM with your PC.  I would caution against making
changes while the engine is running.

At 12:11 PM 3/17/98 -0600, Joe Boucher wrote:
>You guys and your software jokes!  You crack me up!  (Did any other
mechanical
>types understand it?  Uh, huh.  Me neither.)
>
>Before you two get into a pissing contest to see who can piss higher up
the PC
>tree, let me try to deflect the conversation a little.  How hard would it
be to
>hook a laptop to a GM ecm directly to the eprom to develop the various
maps and
>flags for tuning a custom engine setup?  The idea is to avoid having to
pull and
>replace the prom chip for every small change.  The idea would be to feed
the ecm
>with data out of the laptop until the prom maps are nailed down, then burn
the
>prom from the file in the laptop.
>
>The configuration of the prom chips I have seen are 24 and 28 pins.  The
parallel
>port has 25 pins or so (25, 26, whatever it takes). I'm guessing this might
>reguire a separate board if a lead for each pin of the prom is required.
>
>And I'm sure some software is required.
>
>Whatyathink?  This inquiring mechanical mind wants to know.
>
>Joe Boucher
>'70 RS/SS Camaro  '81 TBI Suburban
>
>
>